一种无人机信息回传信道编码方法与飞腾CPU高速实现  

High Speed Channel Coding Method and Implemention on Phytium CPUfor UAV Data Return

作　　者：翟绪论 张永光 靳安钊[1,2] 李梦冰 方加云 ZHAI Xu-lun;ZHANG Yong-guang;JIN An-zhao;LI Meng-bing;FANG Jia-yun(National Key Laboratory of Electromagnetic Space Security,Jiaxing,Zhejiang 314033,China;No.36 Research Institute of CETC,Jiaxing,Zhejiang 314033,China)

机构地区：[1]电磁空间安全全国重点实验室,浙江嘉兴314033 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2024年第4期22-27,共6页Communication Countermeasures

摘　　要：随着无人机信息感知能力的增强,数据回传链路的吞吐量需求不断提高,为远距离高速回传数据,无人机平台必须实现高速率的信道编码。面向低功耗CPU平台上的高速信道编码需求,首先提出了一种面向字节数据流的并行BCH编码方法,并对该方法的正确性给出了理论证明,该方法通过字节查表和异或运算实现并行编码,降低CPU软件计算复杂度;然后基于飞腾多核CPU和SIMD指令,对并行编码方法进行了进一步优化,设计了高并行的软件编码方案。在飞腾D2000CPU上实现编码吞吐率大于8Gbps,与原始串行编码方法相比极大提升了编码效率,为无人机高速视频回传等场景提供了一种高效率、低功耗、自主可控的信道编码实现方案。With the enhancement of UAV's information perception capabilities,data return links need higher throughput.UAVs must implement high speed channel coding,in order to transmit data at high speeds over long distances.For high speed channel coding on low-power CPU,a parallel BCH encoding method for byte streams is proposed and its theoretical prove is given.This method achieves parallel encoding through byte table lookup and XOR operation,reducing the computational complexity of CPU software.Based on the Phytium CPU and SIMD instructions,the parallel encoding method is optimized and a highly parallel software encoding scheme is designed.Implementing an encoding rate higher than 8Gbps on the D2000 CPU,greatly improves encoding efficiency compared to the original serial method,providing a high speed,low-power encoding scheme for scenarios such as video feedback from UAVs.

关 键 词：无人机数据回传 BCH编码 飞腾CPU 并行计算 

分 类 号：TN911.22[电子电信—通信与信息系统]